Also found in: Medical, Acronyms, Encyclopedia, Wikipedia.


National Market System

A trading system listing securities that trade in both New York and on regional exchanges. This allows investors to find the best price available for securities. The NMS also facilitates trading of certain over-the-counter stocks. It is sponsored and managed by NASDAQ and FINRA. See also: 19c-3 stock.

Normal Market Size

The number of shares in a publicly-traded company that can be traded at a given price. The normal market size is a set number determined by the stock's market capitalization. Market makers must trade within the parameters of the normal market size. If a market maker wants to buy or sell more shares than the normal market size, he/she must negotiate a new price. The normal market size exists to keep particularly large orders from affecting the share price, thus reducing volatility.


National Market System (NMS).

The National Market System (NMS) links all the major stock markets in the United States and was developed to foster competition among them.

Federal rules require these trading centers to ensure that transactions are executed at prices at least as good as protected quotations displayed at another center. A protected quotation is one that's immediately and automatically accessible.

References in periodicals archive ?
He reviewed 320 reported cases of NMS since 1968 and found that "with wider recognition, mortality [from NMS] has decreased from about 22 percent of cases reported through 1980 to 4 percent of the last 50.
At 3GSM World Congress, NMS will demonstrate the robust feature set and functionality that has made MyCaller the RBT choice for operators worldwide
To see a demonstration of the NMS-based VOIR portal and mobile TV application along with other NMS applications and solutions at ITU Telecom World Hong Kong, visit the NMS booth #11085.
Multiven NMS supported equipment include Cisco, Juniper, Nortel, Lucent, Alcatel, Force10, Aruba, Huawei, Extreme, Foundry and XORP.
Callware has very strong relationships with major equipment providers and application developers in Spain and Portugal, which will allow us to further expand our footprint in these regions," said John Orlando, chief marketing officer for NMS.
Our Vision VoiceXML Server provides a complete solution that allows customers to bring their speech and video services to market in record time," said John Orlando, chief marketing officer for NMS.
NMS develops products that enable new mobile voice, data and video applications and improve the performance and quality of wireless networks, helping our customers grow their revenues and profits.
This further reinforces CSL's position as a leading innovator and provides excellent brand awareness for NMS in the marketplace," said Critz Chan, vice president and general manager, Asia, NMS Communications.
NMS routing and regulatory audit solution that can be easily integrated into the current business model of any firm," said Michael A.
NMS Communications (NASDAQ: NMSS), a leading provider of technologies and solutions for mobile applications and infrastructure, today announced one of India's largest GSM operators has deployed a Short Messaging Service (SMS) center based on technology from solutions provider TeleDNA and powered by NMS's media processing technology (http://www.